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A078452 a(1)=1, a(n)=ceiling(n/a(a(a(n-1)))). 0
1, 2, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 6, 10, 7, 11, 8, 12, 8, 13, 7, 14, 7, 15, 8, 16, 8, 17, 7, 18, 12, 13, 10, 13, 10, 14, 11, 15, 11, 15, 12, 16, 12, 17, 10, 17, 11, 18, 18, 19, 12, 19, 12, 20, 15, 16, 16, 16, 16, 17, 14, 17, 14, 18, 24, 18, 24, 19, 15, 19, 16, 20, 20, 20 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..79.

CROSSREFS

Sequence in context: A074990 A102605 A112995 * A263997 A135636 A025795

Adjacent sequences:  A078449 A078450 A078451 * A078453 A078454 A078455

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Dec 31 2002

STATUS

approved

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Last modified June 25 12:01 EDT 2019. Contains 324352 sequences. (Running on oeis4.)